Is Sơn La hot in September?
Days are typically warm at 29.5°C, while nights average 20.7°C.
Vietnam · 1991–2020 normal
Sơn La in
September.
Typical September weather in Sơn La: 29.5°C by day, 20.7°C at night, 102 mm of rain over 8.8 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high29.5°C
Typical low20.7°C
Rain102 mm
Wet days8.8
In the year-round weather comparison, September scores 57 out of 100 (February leads the year at 95). Daylight is calculated as 12 h 14 from latitude 21.33°.
September at a glance
What is Sơn La like in September?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 102 mm across about 9 wet days.
How much daylight is there?
There are about 12 h 14 between sunrise and sunset at mid-month, calculated from the place latitude.
Is September a good time to visit?
September ranks 7 of 12 in our weather comparison; February ranks first.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 1567681
- NOAA station
- VMM00048806 · SON LA
- Station distance
- 2.1 km from the place centre
- Coverage
- Good coverage · 18 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Sơn La is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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